Thanks so much for your ask! I’ve meant to do a tutorial like this for a long time. This is the way that I draw big girls, though it’s quite a short and basic tutorial. I hope it helps!
the “area of gain” part was pretty much taken directly from -here-, a VERY informative and helpful tutorial. Here’s a couple of tutorials that I think are pretty good: link and link.
i was like “that area of weight gain chart looks a lot like mine” and then